Clyde's Sister

About

Clyde Donovan's sister is a secretive girl who was first mentioned when Betsy Donovan was dying in a toliet bowl, begging her son to keep the seat down for his sister's sake. She did not seem to appear at her mother's funeral.

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Fun Facts

A teenage girl voiced by Trey Parker can be seen in the deleted scenes for "Reverse Cowgirl" singing at Betsy Donovan's funeral - it's possible this is Clyde's sister. Clyde is also sitting next to a different older woman at the funeral who may be her.